Improved stereotyfers  putty



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J. M. WILLBUR, OF CLEV ELAND OHIO.

Letters Patent No. 82,464, dated September 22, 1868; mzterlated September 17, 1868.

IMPROVED STER'EOTYPERS PTJ'T'iY.

The Schedule referred to in these Letters Patent and. making part of the sam To all whom it may concern Be. it known that I, J. M. \VILLBUR, of Cleveland, coimty of Cuyahoga, in the State of Ohio, have invented a new and improved Stereotypeis Putty; and I do hereby declare that the following is afull and exact description thereof.

The nature of this improvement relates to the composition of a substance to be used as a filling to be put between the letters or type, when the types are set up in form, to make a smooth, even surface before themould is taken from thetype, and which may be readily washed down with a brush to any required depth, leaving the type perfectly free and clean, ready for receiving the plaster for taking the mould. It may also be removed readily, and be used over again repeatedly, as it is not necessary to have it dry in place about the type, before taking the plaster mould. It inayalso be used for taking impressions of seals or stamps, for the typing or stereotyping.

Plaster of Paris has been used heretofore as a filling to level up the surface around the type for stereotyping, but it is very difiicult-to remove it fi'om nearthe face of the type, as it sticks and dries upon them,

and has to be picked off with a graver or bodkin, which isa slow, tedious job. I

This putty is composed of potters clay and olive-oil, (linseed-oil may be used instead, but it causes the putty to my up sooner,)' which, having no aifinity for water, or for the type or patterns in connection with which it is used, .renders it easily separated from them in the process of taking moulds or casts it, therefore, renders the operation of stereotype-rs more easily and perfectly performed, saving much tiine and labor. It may also be made and packed in bladders for sale, similar to gla-ziers putty. It may also be renewed by adding a little oil and working it in, if at anytime it should become (hied.

The mode of compounding this putty is as follows: Take finely-ground potters clay, which must be perfectly dry and free from grit, and add a sutficient quan-I tity of pure olive-oil to give a proper consistency. .Mix well together until it has the appearance of common glaz'iers putty, when it is ready for use.

I claim the composition hereinabove described, for the purposes specified. I v r J M. WILLBUR.

Witnesses:

' GEO. HESTER,

GEO. W. TIBBITTS. 

